The United Nations said Wednesday it has been battling a bedbug infestation in its buildings since last year, making the international organization the latest in a growing number of New York City landmarks to deal with the widespread invasion of the blood-sucking insects.

The creatures were uncovered on most of the floors in one of the complex’s buildings in May 2009, a spokesperson for the U.N. Secretary-General’s office said in a statement.

Fumigation of the facility appeared to eradicate the problem, but more of the insects were found in some pieces of furniture this month. Officials moved the furniture to an area of the complex not used by staff to allow for further fumigation.

Bedbugs have already taken up residence at a number of New York City landmarks, including the Metropolitan Opera House, the Waldorf-Astoria Hotel, and the Empire State Building.

Earlier this week, Carnegie Hall confirmed the presence of the bugs on its premises.